Direct Online Starter (DOL) · Motor Control
Rockwell/AB Marine PowerFlex 40P 5.5kW 690V Marine is a direct-on-line motor starter. It is installed in a motor-control center, starter panel or local enclosure close to the electrical distribution and driven machinery. Its purpose is to connect a motor directly to the supply under command while providing the required contactor, overload and interlock functions. Main contactor, overload protection, control relays, auxiliary contacts and local or remote start-stop circuits form the starter assembly. The exact model designation distinguishes motor rating, voltage class and protection functions from neighboring starters; refer to the manufacturer documentation for the exact figure.
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What our service work and the manufacturer documentation say about keeping this model running.
Inspect power and control terminals, contactors, overload devices, control relays and enclosure condition with the circuit safely isolated. Review trip history and compare motor current between phases when appropriate. Function-test start, stop, emergency stop and process interlocks according to vessel procedure. Check contact condition, coils and signs of overheating. Verify overload settings against the actual motor data after replacement. Refer to the manufacturer documentation for the exact figure for current settings, trip characteristics and electrical test values.
Keep contactor coils or complete contactors, auxiliary contacts, overload modules, fuses, control relays and manufacturer-recommended replacement starters. Critical motors may justify a complete spare starter. Preserve setting records for adjustable protection devices.
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